JPMorgan Chase hired ex-cons into jobs that could access clients’ bank-account information as it failed to properly screen thousands of employees for more than eight years, according to an industry watchdog.

The financial behemoth headed by Jamie Dimon failed to perform proper background screens on as many as 8,670 employees from January 2009 to May of this year, according to the Financial Industry Regulatory Authority.

The bank failed to properly fingerprint about 2,000 employees on time, according to Finra. Others were only screened for having committed financial crimes, the watchdog said.